#557FBD#557FBD

#557FBD is a mid, moderate blue. Relative luminance 0.208; OKLCH L 59.3% C 0.106 H 258.0°. Best body text is #000000 at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#557FBD
RGB	rgb(85, 127, 189)
HSL	hsl(216, 44%, 54%)
HSV	hsv(216, 55%, 74%)
CMYK	cmyk(55%, 32.8%, 0%, 25.9%)
CIE-LAB	lab(52.71, 3.77, -36.92)
CIE-LCH	lch(52.71, 37.11, 275.84°)
OKLab	oklab(59.32% -0.0222 -0.1041)
OKLCH	oklch(59.32% 0.106 258)
XYZ	xyz(20.5178, 20.7825, 51.0645)
Luminance	0.2078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FBD #BD9355

analogous

#55B3BD #557FBD #5F55BD

triadic

#557FBD #BD557F #7FBD55

tetradic

#557FBD #BD55B3 #BD9355 #55BD5F

square

#557FBD #BD55B3 #BD9355 #55BD5F

split-complementary

#557FBD #BD5F55 #B3BD55

monochromatic

#2A456D #3C6199 #557FBD #81A0CE #ADC1DF

Accessibility & contrast

On white

4.07

#557FBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.16

#557FBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FBD

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FBD	#FFFFFF	#000000	##000000
##557FBD	1.00	4.07	5.16	5.16
#FFFFFF	4.07	1.00	21.00	21.00
#000000	5.16	21.00	1.00	1.00
##000000	5.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6683C0

Deuteranopia (green-blind)

#5979BC

Tritanopia (blue-blind)

#148D95

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557fbd;
/* rgb */ color: rgb(85, 127, 189);
/* oklch */ color: oklch(59.3% 0.106 258.0);

Tailwind

colors: {
  custom: {
    50: '#8ca3d1',
    500: '#557fbd',
    950: '#000000',
  },
}

SCSS

$custom: #557fbd;
$custom-light: #8ca3d1;
$custom-dark: #000000;

JSON

{
  "hex": "#557fbd",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 189
  },
  "hsl": {
    "h": 215.769,
    "s": 44.068,
    "l": 53.725
  },
  "oklch": {
    "l": 0.5932,
    "c": 0.10642,
    "h": 258
  },
  "luminance": 0.20784
}

Semantic roles & 50–950 ramp

primary

#557FBD

secondary

#CDBBA1

accent

#A054D4

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0D0F14

muted

#7D7F82

Preview Lab

Preview with #557FBD

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →